Adding Fractions with Unlike Denominators

What must you have to add and subtract fractions?

• Common numerators
• Different numerators
• Different denominators
• Common denominators

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What is a good common denominator for this problem? 

 $\frac{3}{9}+\frac{1}{6}$  

• 18

• 9

• 24

• 12

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is a good common denominator for this problem?

 $\frac{1}{8}+\frac{5}{6}$  

• 24

• 18

• 32

• 16

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Billy ate  $\frac{3}{8}$  of a pizza and Felicity ate  $\frac{1}{4}$  of the pizza. How much pizza did they eat in all?

•  $\frac{1}{2}$  
  

•  $\frac{5}{8}$  
  

•  $\frac{3}{4}$  
  

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What number could be a common denominator for these three fractions?

 $\frac{1}{2}\ and\ \frac{1}{3}\ and\ \frac{1}{4}$  

• 9

• 8

• 12

• 6

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Which of these numbers could NOT be a common denominator for these two fractions?

 $\frac{1}{6}\ and\ \frac{1}{4}$  

• 12

• 18

• 24

• 36

Tags

CCSS.4.NF.A.2

CCSS.4.OA.B.4

 $\frac{1}{2}+\frac{1}{4}=$  

•  $\frac{3}{4}$  

•  $\frac{2}{4}$  

•  $\frac{3}{6}$  

•  $\frac{2}{6}$  

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

 James is helping his dad paint his house. They mixed $\frac{5}{9}$ gallons of white paint and  $\frac{1}{6}$  gallons of blue pain. How many gallons was the mixture in all? 

•  $\frac{6}{18}$   gallons

•  $\frac{13}{18}$   gallons

•  $\frac{4}{5}$   gallons

•  $\frac{1}{6}$   gallons

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

 $\frac{1}{4}+\frac{2}{3}$  

•  $\frac{3}{12}$  

•  $\frac{3}{4}$  

•  $\frac{11}{12}$  

•  $\frac{3}{7}$  

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

 $\frac{5}{12}+\frac{1}{6}$  

•  $\frac{6}{18}$  

•  $\frac{6}{12}$  

•  $\frac{3}{4}$  

•  $\frac{7}{12}$  

Tags

CCSS.4.NF.A.2